Claude Enter Key Control (by marusin)

Prevent accidental sends when you meant to insert a line break in Claude.

Have you ever tried to add a new line in Claude, only to accidentally send your message? Claude Enter Key Control is a browser extension that lets you use the Enter key to insert line breaks, just like in a regular text editor. It helps reduce accidental sends and makes it easier to write long prompts, organize your thoughts, and work more comfortably in Claude. ⚠️ Important: After installation If you already had a Claude tab open when installing the extension, please reload that page once to apply the changes. 💡 Key Features - Use Enter to insert a new line, just like in a standard text editor - Helps reduce accidental sends while using IME input for Japanese, Chinese, Korean, and other languages - Choose from multiple send shortcuts, such as Shift+Enter, Ctrl+Enter, or Mac Cmd+Enter - Supports the standard Claude chat input screen - Multilingual UI support: Japanese, English, Korean, Simplified Chinese, Traditional Chinese, Spanish, and Portuguese (Brazil) ✨ Benefits and Ease of Use - Set your preferred key behavior in just a few clicks - Reduce the frustration of rewriting messages after accidental sends - Write detailed and complex prompts more smoothly 🔒 Simple, Fast, and Safe - Lightweight and responsive - Privacy-friendly: your input data is not collected, stored, or transmitted externally - The source code is available on GitHub, making it easier to review how the extension works 🌐 Supported Service - Supports the official web version of Claude: https://claude.ai/ ⚙️ How to Use 1. After installation, reload any Claude tab that was already open. 2. Click the extension icon in your browser toolbar. 3. Turn the extension on or off and choose your preferred send shortcut. 💖 A Note from the Developer If this extension is useful to you, please consider leaving a rating or review on the store. Even a star-only rating helps support future updates. 📋 Release Notes Version 1.4.0 - Improved Claude send button detection based on the input/composer DOM structure. - Improved send shortcut compatibility in multilingual Claude UI environments. - Reduced the risk of incorrectly detecting attachment, model selector, recording, menu, feedback, or other unrelated buttons. - Removed broad document-level button search from Claude send button detection. Version 1.3.1 - Improved cases where send shortcuts might not work in multilingual UI environments. - Improved send button detection for localized Claude UI labels. - Adjusted send button detection to avoid accidentally clicking feedback, comment, or report-related buttons. Version 1.3.0 - Improved behavior during IME input for Japanese, Chinese, Korean, and similar languages, reducing interference with Enter key conversion confirmation. - Fixed a case where pressing Enter could insert an extra line break in some situations. Version 1.2.1 - Added UI display support for Spanish, Portuguese (Brazil), and Traditional Chinese. Developer: marusin tools